U-Bolt Kits

Southwest Wheel® U-Bolt Kit for 2,000 lbs. 1.75" Trailer Axle - APUBR134BX
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MADE IN THE U.S.A.


For 1 3/4" round axle, bolt length 4.29", 3/8" diameter, for 1 3/4" spring.  Commonly used on 2,000 lbs. 1 3/4" round trailer axle using an SW2 trailer leaf spring.

Part No Quantity Description
UBR-175429-38F 4 1 3/4" u-bolts, 4.29" long, 1.81" ID width, 3/8"-24 thread, 2" thread length
TP-175173 2 3.75" x 3.5" tie plates for 1 3/4" ubolts
38LW 8 3/8" lock washers
38NFN 8 3/8"-24 nuts
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Price: $27.99
Southwest Wheel® U-Bolt Kit for 3,500 lbs. 2 3/8" Trailer Axle 5.25" Length - APUBR238BX
Free  FedEx  2nd Day Air Shipping and Volume Pricing
MADE IN THE U.S.A.


For 2 3/8" round axle, bolt length 5 1/2", 1/2" diameter, for 1 3/4" or 2" spring.  Commonly used on a 3,500 lbs. 2 3/8" round trailer axle using a SW2, SW3, SW4, or SW4B trailer leaf spring.

Part No Quantity Description
UBR-238550-50F 4 2 3/8" u-bolts, 5.5" long, 2.44" ID width, 1/2"-20 thread, 2" thread length
TP-238175R 2 3.75" x 4.8" tie plates for 2 3/8" ubolts
12LW 8 1/2"-20 nuts
12NFN 8 1/2" lock washers
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Price: $32.99
Southwest Wheel® U-Bolt Kit for 3,500 lbs. 2 3/8" Trailer Axle 5.25" Length - APUBR238BX
Free  FedEx  2nd Day Air Shipping and Volume Pricing
MADE IN THE U.S.A.


For 2 3/8" round axle, bolt length 6 1/4", 1/2" diameter, for 1 3/4" or 2" spring.  Commonly used on a 3,500 lbs. 2 3/8" round trailer axle using a SW5 or E5226 trailer leaf spring.

Part No Quantity Description
UBR-238625-50F 4 2 3/8" u-bolts, 6.25" long, 2.44" ID width, 1/2"-20 thread, 2" thread length
TP-238175R 2 3.75" x 4.8" tie plates for 2 3/8" ubolts
12LW 8 1/2"-20 nuts
12NFN 8 1/2" lock washers

(Images, descriptions, volume discounts, find out more...)
Price: $32.99
Southwest Wheel® U-Bolt Kit for 5,200-7,000 lbs. 3" Trailer Axle - APUBR3BX
Free  FedEx  2nd Day Air Shipping and Volume Pricing
MADE IN THE U.S.A.


For 3" round axle, bolt length 7", 9/16" diameter, for 1 3/4" or 2" spring, 3" thread length.  Commonly used on a 5,200 lbs. to 7,000 lbs. 3" round trailer axle using a SW5, E5226, SW6, or E5115 trailer leaf spring.

Part No Quantity Description
UBR-300700-56F 4 3" u-bolts, 7" long, 3.09" ID width, 9/16"-18 thread
TP-300209R 2 3.50" x 5.37" tie plates for 3" ubolts
916LW 8 9/16"-18 nuts
916NFN 8 9/16" lock washers
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Price: $39.99
Southwest Wheel® U-Bolt Kit for 8,000 lbs. 3.5" Trailer Axle - APUBR35BX-916
Free  FedEx  2nd Day Air Shipping and Volume Pricing
MADE IN THE U.S.A.


For 3 1/2" round axle, bolt length 8", 9/16" diameter, for 2" spring.  Commonly used on a 8,000 lbs. 3.5" round trailer axle using a E5115 trailer leaf spring.

Part No Quantity Description
UBR-300800-56F 4 3.5" U-bolts, 8" long, 2" ID width, 9/16"-18 thread, 2" thread length
TP-350200 2 4" x 7" tie plates for 3.5" U-bolts
916NFN 8 9/16"-18 nuts
916LW 8 9/16" lock washers
(Images, descriptions, volume discounts, find out more...)
Price: $61.99
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